refactor: drawpalno, hitflags

[potsmugen]

Refactor:

• The palette selection code no longer uses "drawpalno", which was a source of confusion
• Removed DrawPalNo trigger
• PalNo trigger now returns previous DrawPalNo value
• Winmugen char helpers are no longer locked to returning PalNo = 1, as that behavior adds a layer of complication to the code without benefits. That compatibility difference also does not exist in Mugen 1.0+
• Segregated hitflag bits from state types

Fix:

• Fixed issue where if you played a normal round then went into training mode, the fight call would not be skipped